Question

If three colourless solutions: dil NaOH, water and dil HCl are given to you then how will
you identify water from these solutions without testing?
​

Answer 1

Explanation:

By doing litmus paper test.

NaoH turns red litmus to blue

Hcl turns blue litmus to red

but water does not change the colour of litmus paper

Answer 2

Answer:

by pH paper

Explanation:

the pH of NaOH is more than 7

, of HCl is less than 7 or around 2 to 3

,of water is 7